Fengshuo He, Xinlei Feng, Zhenjia Pan, Gongjie Zhou, Yong Lu
{"title":"基于能量分裂法的低速船用柴油机排气流动特性研究与优化","authors":"Fengshuo He, Xinlei Feng, Zhenjia Pan, Gongjie Zhou, Yong Lu","doi":"10.1115/1.4063664","DOIUrl":null,"url":null,"abstract":"In this study, an optimization scheme for exhaust flow characteristics based on energy splitting method is proposed. The low-speed marine diesel engine adopts the exhaust energy splitting method during the exhaust process. Based on this, a one-dimensional GT Power calculation model, a three-dimensional CONVERGE calculation model, and a three-dimensional model of the gas collection box are established. After splitting, the vortex structure in the same phase of the gas collection box has a larger scale, higher flow rate, more significant entropy increase, and more severe turbulence dissipation. The high-grade gas collection box is optimized from the perspectives of length and diameter; The results show that after optimization, the flow energy dissipation brought by the vortex structure is reduced, and the outlet pressure and flow velocity of the gas collection box are increased.","PeriodicalId":15676,"journal":{"name":"Journal of Energy Resources Technology-transactions of The Asme","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Research and optimization on the exhaust flow characteristic based on energy splitting method of the low speed marine diesel engine\",\"authors\":\"Fengshuo He, Xinlei Feng, Zhenjia Pan, Gongjie Zhou, Yong Lu\",\"doi\":\"10.1115/1.4063664\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this study, an optimization scheme for exhaust flow characteristics based on energy splitting method is proposed. The low-speed marine diesel engine adopts the exhaust energy splitting method during the exhaust process. Based on this, a one-dimensional GT Power calculation model, a three-dimensional CONVERGE calculation model, and a three-dimensional model of the gas collection box are established. After splitting, the vortex structure in the same phase of the gas collection box has a larger scale, higher flow rate, more significant entropy increase, and more severe turbulence dissipation. The high-grade gas collection box is optimized from the perspectives of length and diameter; The results show that after optimization, the flow energy dissipation brought by the vortex structure is reduced, and the outlet pressure and flow velocity of the gas collection box are increased.\",\"PeriodicalId\":15676,\"journal\":{\"name\":\"Journal of Energy Resources Technology-transactions of The Asme\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2023-10-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Energy Resources Technology-transactions of The Asme\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1115/1.4063664\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Energy Resources Technology-transactions of The Asme","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1115/1.4063664","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Research and optimization on the exhaust flow characteristic based on energy splitting method of the low speed marine diesel engine
In this study, an optimization scheme for exhaust flow characteristics based on energy splitting method is proposed. The low-speed marine diesel engine adopts the exhaust energy splitting method during the exhaust process. Based on this, a one-dimensional GT Power calculation model, a three-dimensional CONVERGE calculation model, and a three-dimensional model of the gas collection box are established. After splitting, the vortex structure in the same phase of the gas collection box has a larger scale, higher flow rate, more significant entropy increase, and more severe turbulence dissipation. The high-grade gas collection box is optimized from the perspectives of length and diameter; The results show that after optimization, the flow energy dissipation brought by the vortex structure is reduced, and the outlet pressure and flow velocity of the gas collection box are increased.
期刊介绍:
Specific areas of importance including, but not limited to: Fundamentals of thermodynamics such as energy, entropy and exergy, laws of thermodynamics; Thermoeconomics; Alternative and renewable energy sources; Internal combustion engines; (Geo) thermal energy storage and conversion systems; Fundamental combustion of fuels; Energy resource recovery from biomass and solid wastes; Carbon capture; Land and offshore wells drilling; Production and reservoir engineering;, Economics of energy resource exploitation